Sewing machine



April 25, 195o TIG. FRANKERT 2,505,036

SEWING MACHINE Filed April 2o, 1945 2 sheets-sheet 1 Thor Gunnar FYQHKQNL \N\/ENTO( April 25, 195o "r. G. FRANKERT 2,505,036

SEWING MACHINE Filed April 20, 1945 2 Sheets-Sheet 2 ThorvGUnnQr' FYOKQH' VELNT@ m @bh/WML -9m ATTN.

.47.5 :which Patented Apr. 25o, 1950 0 F YFl CE Application April 120, 1945,. :Serial No; $892,329

In Sweden Marchi24, 1941i The presentginvention relates .to a device. in

. .sewingmachines, .particular1yin-the ready-.made- `clothing industry, .for automatically sewing .on .hooks',.,or eyes to ribbons iorcorsets, 'for example. As a.matter ..of fact, thereare machines.,forthis purpose buttheyareexpensive, complicatedand 1 .not `quite -reliable of. service. T-hus.it. has ,prayed .diiiicult. to `obtain/exact distances .between the ,hooksor veyes-on theribbon,V whichi's very importantbecause a Ifew fractions .only of. ainilli.y meter ...cause incorrect. distances between .the sewed-on hooksand eyes ,on the respectiveribbons. This .isa greatedisadvantage,.because-.the error.. is cftennct discovered. untilthearticles ,are

finished', expensive adjustments beingthusneces- .sary. Thedevice. according .to this.. invention eliminates these inconveniences.

The invention .is substantially..characterizedby `the factpthat it consists of two .disks rotatably mountedion.. a common shaftand., resting .against v one another, the said disks .beingljby the-actuation of arod guided '.by an eccentric sheave on the sewingmachne adapted toA rotate. fata .cer- .tain'angle the twodisks beingtmoreover.provided with cooperating Acarrying .and vlocking.devices fuor Y. V the hoo-k .or eye,.which.in.the initialposition of the disks... isadapted :to .be automatically .fred .on `to .the ,disksfroin amagazineand, simultaneously with therotation of the disks, .be :moved to the sewing. position on the ribbon, which is, fed-,quite independently. in a .per se knownmannensd that exact ,distances between .the-.sewedeon .hooks. .or eyes are obtained.

.. VAn example of an rembodiment.ofthe invention A,is illustratedon-the.accompanying drawing. All l" l the gfdres show the device after. Athe hooker eyehas been moved to .the sewing/position.

Fig .l shows-a top View `of the device. Fig2 A,shows the device from theend, i. eingthelongi- Vt'udinal direc-:tionk of thesewing machineandi-romA` the .inside thereof. Fig. 3.shows thedevice partly angles to. thelsingiiudinal.damien-Otite Sewingrnachine.

. Accordi-neto. thef .dranine massieren@ fl "e merel. .l .indicates the fievteplete..Omhels .slate .i11rfk1ic11` isfrreridda smv@ 2 wit 3er-1d H01" eudnsrtheribben Thee icl-er1,

is fed by known. feeding. devices not s own.

.. ,1a. mwlm'aa f. -maeazine-rreiereblytcnsieting fof .-ffem? Parallel -rds .5- .At @slower-.end Oi themeeaznehere The .hooks `or..eyes---are placed.-

is a discharge device of known kind. 'Itmayfon- Sist zot al rsoringloaiedrotary :segmental member revided i Withfineera lT11-and: A anita 2 underside. Thesaidyiingers .are adapted tofcarry ,the.. .ho.ok-.or eyein .the magazine in-.sucha-Way that.. Whentheprotruding portion. 9 of. themember lisactuatedso thatthe member. is turned, 5 .ahook or .eyelisreleasedlwhile the one .lying i. aboyeis stopped. vFor the sake ofsimplicity V'the discharge device is. shown from aboveinFigfl, A.al-though inrerality. it has an-inclined position, `as v .will be seen .irom,Fig. '2. The magazine shown 10 .on .the `drawing is particularly. intended :for hooks.

.. When onlyeyes are usedthe `magazinehas .aver- .ticalposition l g Thehopksror eyes are moved from .the discharge .deviceofuthe magazine. tothe sewing positionon with@ `ribbonby. vmeanslof the -following device. y .'IWo-disks Iland l2 .are rotatably `niounl'ledlfon i.a pin iii. The lower disk. Il has an outwardly .projecting segment-shaped. ange provided .fat one endlthereof withi a recess I 3 .suited .to the 20ff -hookoreyeand somewhat sunk in the ange. The .disk I/I is further `.provided with two pins Mend yI5,,eachoi whichenters itsindvidual slot I6 and l, Ill in the .upperdisk ;I2. e By this Varrangement the disksoare rotatable relatively toone anothe'ra 4`distance .correspondingto .the length offth said slots. By .means .of a sleeve. Ithe Aupper disk I2 is movable `aroundthe shaft --I il. This sleeveI 8 carrieslin its turnV another vsleeve I9 rotatable `arounc'lvthesame. The sleeve-I 9- isprovded with I.a presser,.or hook retaining` device for the hook or eye..consistingv of apawlll turnably mounted l on .an eark v2-.I .xed on -the sleeve I9. Aspring22 .,tendsto hold thepawl .20 in depressed position. y. arcuate rib-.Zahaving ahigherl step and a lower step connected by an inclined cam. surfaceis mounted on the-opper surface ofthe disk I2. )Instheposition shown the pawl rests on the lower step .ofgthe rib :23 and when the disk I2v begins :itsclockwise-movement, the pawl 2E! glides on to the apper'step of ;the.rib23 and is raised from l.the,hoek orreye. wThe'sleeve. Ili is provided with v an arm-24 `screwed.'into.the same, the. said .arm ...resting against the; pin I4 Xed-inthe-lower'd-isk .by a- .s pr1fng; 25, one `enziof` which is :xed .to l hearm Z-A-andthaother tothe pin 'I 5.

n..the.iupper disk- I12 there `is further: located Vapin', 2.6,.whichsis adapted Vto actuate-the Vproing nortion. ill of the; segmental memberI 6. .,Bymeansfof api-votl'l. located onthe diskl2- the disksare via 'a 110x128 connected with-an eccencfgvsheaye onthe. sewingl rnachine,-thegT said l eave im artingjoftherod.afreciprocal.motion tothefdisks oscillatory .motion through known brake device 29. By this device it is obtained that when returning from the sewing position the lower disk II is retained in its position until the disk I2 has rotated a length corresponding to the slots I6 and I1, whereafter the disk I I is brought along in the rotary movement of the disk I2. During this movement of the disk I2 relatively to the disk I I the pressure of the pawl against the hook or eye is released by the pawl gliding on to the upper step of the rib 23 as mentioned above, whereafter the two disks return together to the initial position. In this position the disk l2 has the same range of movement in the slots I6, I1 as in the sewing position. The lower disk I I is still locked by the brake device 29, and therefore, after the hook or eye has fallen into the recess I3, the upper disk I2 turns and allows the pawl 20 to exactly lock the hook or eye by the rib 23 being turned forwards prior to the disks being moved together to the sewing position.

The device operates as follows:

On turning of the disks II and I2 in counter clockwise direction, the stop 2B actuates the protruding portion 9 of the segmental member 6 so that the latter turns a corresponding distance and drops a hook or eye from the magazine into the recess I3 -of the segmental flange c-n the lower disk II. Y Next, the rod 28 rotates the disks through a certain angle in counterclockwise direction so that the hook or eye comes to the sewing position shown in Fig. I. As soon as this movement begins, the pawl 2li, which serves as pressure foot, glides down from the upper step of the rib 23 and presses against the hook or eye in the recess I 3 and thus holds the same until it comes to the sewing position. This downward gliding of the pawl 2t is caused by the rotation of the disk I2 relatively to the disk Ii a distance corresponding to a slot length. During the clockwise rotation of the disks towards the feeding position the disk I2 first rotates a distance corresponding to the length of the slots IS, I l, the pawl 2l) gliding on to the upper step of the rib 23 and liberating the hook or eye. Thereafter the disk I Z carries along the lower disk II in the rotarymovement by means of the pins I4 and I5. The pawl 20 accompanies in raised position the disk II due to the pull exerted by the spring upon the pin 24 and the sleeve I9.

The process is then repeated from the initial position at the feeding device. The feeding of the ribbon takes place quite independently during the rotary movement, and therefore the longest possible time is obtained for the operation of the disks during the said movement.

More specically with respect to the rotary movement of the disks II and I2, in sewing position, Fig. l, the pins I 4 and I5 lie at the right hand ends of the slots I6 and I'I in the disk I2. During clockwise movement to the feeding position, the disk I2 first rotates a distance corresponding to the length of the slot I6 0r Il; the pawl 2li gliding on to the upper plane of the projection 23 and liberating the hook or eye. Thereafter the disk Il is carried by the disk I2. During this operation the pins I4 and l5 are at the left hand ends of the slots It and I'l. At counterclockwise movement to the sewing position the disk I 2 first rotates a distance corresponding to the length of the slot It'or I'I, the pawl 26 gliding on to the lower plane of the projection 23 and pressing the hook or eye in the recess and holds the same until it comes to the sewing position. These movements are facilitated by the fact that lthe disk II is provided with a brake device 29.

As is clear from the above, the device according to the invention is very simple with regard to its construction and mode of operation. Due to the compact construction which is based on a rotary movement, a great exactness of the mode of operation is obtained, all play or the like caused by levers and rods for example, being quite eliminated.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In a sewing machine for automatically sewing small objects, such as hooks or eyes, at spaced intervals to a length of fabric material, a mechanism for placing the objects to be sewed on in predetermined time intervals on the material following successive feeding movements thereof by the sewing machine, said mechanism comprising a rst member including an object holder and oscillatable between a feeding position in which said object holder is located to receive an object and a sewing position in which said object holder is located on the material to which the object is to be sewed, a second member oscillatable parallel to said first member through a distance exceeding that between said two positions, means p connecting said two members, for limited relative oscillatory movement, means for oscillating said second member in a predetermined sequence, a pressure foot connected to said iirst member for movement therewith between said two positions and movable towards and away from said object holder, and means including a cam on said second member cooperating with a portion of said pressure foot to move the latter away from said object holder when said second member starts its movement inthe direction from said sewing position towards said feeding position and to moveA said pressure foot towards said object holder when said second member starts its movement in the opposite direction.

2. A mechanism as claimed in claim l, including brake means to prevent said i'lrst member from moving with said second member during the initial phase of each movement of the latter.

3. In a sewing machine for automatically sewing small objects, such as hooks or eyes, at spaced intervals to a length of fabric material, a mechanism for placing the objects to be sewed on in predetermined time intervals on the material following successive feeding movements thereof by the sewing machine, said mechanism comprising two superposed disks oscillatable about a common vertical axis through a certain angle in either direction, o-ne of said disks including an object holder which moves on oscillation of said Kdisk between a feeding position and a sewing position, means connecting said two disks for limited relative rotation, means for oscillating the other disk about said axis througha distance exceeding that between said two positions, a pressure foot connected to said first disk for movement therewith between said two positions and movable toward and away from said object holder, and means including a cam on said second disk cooperating with a portion of said pressure foot to move the latter away from said object holder when said second disk starts its movement in the direction from said sewing position toward said feeding position and to move said pressure foot toward said object holder when said second disk starts its movement in the opposite direction.

4. A mechanism as claimed in claim 3, in which said means connecting said twol disks include at least one pin projecting from one of said disks parallel to the axis thereof through an arcuate slot in the other disk.

5. A mechanism as claimed in claim 3, in which the disk including the object holder is disposed below said second disk and said object holder comprises a segmental flange on said lower disk formed with a recess at one end'thereof to receive the object to be moved from the feeding position to the sewing position.

6. A mechanism as claimed in claim 3, in which the disk including the object holder is disposed below said second disk, the latter having an upwardly projecting hub, said pressure foot including a sleeve rotatably mounted on said hub of said upper disk, and a spring-actuated pawl pivoted to said sleeve.

7. A mechanism as claimed in claim 3, in which said disk including the object holder is disposed below said second disk, the latter including an 20 said pressure foot including a sleeve rotatable 25 about said hub of the upper disk, a spring-actu- 6 ated pawl pivoted to said sleeve, an arm radially projecting from said sleeve, and a spring connecting said arm with one of the pins projecting from said lower disk through the slots in said upper disk.

8. A mechanism as claimed in claim 3, in which the disk including the object holder is disposed below said second disk, the latter including an upwardly projecting hub, said pressure foot including a sleeve rotatable about said hub, a spring-actuated pawl pivoted to said sleeve and means connecting said sleeve to said lower disk for movement therewith, said cam being constituted by an arcuate rib on the upper surface of said upper disk including a lower step, a higher step, and an inclined cam portion connecting said two steps and arranged for cooperation with a portion of said pawl.

9. A mechanism as claimed in claim 3, including brake means to prevent said first disk from moving with said second disk during the initial phase of the rotation of the latter in either direction.

THOR GUNNAR FRANKERT.V

No'references cited. 

